Trek the volcanic island of Nea Kameni, stroll previous steaming vents, be trained geology out of your booklet
https://www.slideserve.com/inninkatbs/private-sunset-tour-santorini-a-golden-hour-experience-you-ll-never-forget-14896478
Trek the volcanic island of Nea Kameni, walk prior steaming vents, gain knowledge of geology from your manual, and soak in close by sulfur hot springs.